Stoicism is an excellent philosophy for the ancient world but tt's entirely insufficient for the modern era. Ayn Rand's Objectivism is Stoicism plus Aristotelianism refined and refactored. Aaron Smith elaborates well:
And yet it's proven invaluable in each of those areas for the 30 years after. It's clear your knowledge of Objectivism is akin to thinking you understand Stoicism from reading the dictionary definition.
https://newideal.aynrand.org/the-false-promise-of-stoicism/